yes, they seem like the typical u.s. couple. bethany decker is a full-ti student, her husband stationed in afghanistan. but beth an if i has been missing since the end of january. >> reporter: choking back tears, evelyn has a heart breaking message to a mission granddaughter. >> bethany, if you're out there, please give us a call. we love you and we'd love to hear from you. >> reporter: family, friends, the police, all desperately trying to find bethany ann decker, a young pregnant mother who vanished without a trace. the 21-year-old college steen senior was last seen entering her virginia apt on january the 29th, her parked car was pound in the lot but no sign of bethany. >> she was registered for the spring semester which started at the end of january. but never showed up for class. >> reporter: what is most unsettling is is that relatives say bethany would never abandon her 17 month old son who was staying with bethany's grandparents while she's in school. >> not being in contact with him, i mean, he's just cute as can be, an